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Method for preparing butanol from rape stalks

A technology for rape straw and butanol is applied in the field of preparing butanol, which can solve the problems of low yield of butanol and incomplete fermentable sugar, and achieve the effects of low cost, less investment and simple preparation process.

Inactive Publication Date: 2017-02-15
广西南宁荣威德新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a method for preparing butanol by using rapeseed stalks, so as to solve the problem of low butanol yield due to incomplete degradation of rapeseed stalks into fermentable sugars

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A method for preparing butanol by using rape stalks, comprising the following steps:

[0043] S1: Rinse the rape straw with 12% salt water for 2.5 hours, after rinsing, dry the rape straw at a temperature of 93-104°C until the water content is ≤12%, to obtain dry rape straw;

[0044] S2: crushing the dried rape straw prepared in step S1, and passing through a 150-mesh sieve to obtain rape straw particles;

[0045] S3: Put the rape stalk particles prepared in step S2 into a microwave reactor, add solution A and mix evenly, heat to 63°C, pretreat at a stirring speed of 200-300r / min for 1h, then cool to room temperature and filter, Prepare pretreated rapeseed stalk particles; the solution A is a mixture of butanone, ethanol, and ammonium carboxylate, the mass concentration of the butanone is 9%, the mass concentration of the ethanol is 70%, and the The mass concentration of carboxylate ammonium salt is 7%, the volume ratio of described butanone solution, ethanol solution,...

Embodiment 2

[0049] A method for preparing butanol by using rape stalks, comprising the following steps:

[0050] S1: Rinse the rape straw with 10% salt water for 3 hours, and after rinsing, dry the rape straw at a temperature of 93-104°C until the water content is ≤12%, to obtain dried rape straw;

[0051] S2: crushing the dried rape straw prepared in step S1, passing through a 120-mesh sieve to obtain rape straw granules;

[0052] S3: Put the rape stalk particles prepared in step S2 into a microwave reactor, add solution A and mix evenly, heat to 60°C, pretreat at a stirring speed of 200r / min for 1.2h, then cool to room temperature and filter to prepare Obtain pretreated rape stalk particles; the solution A is a mixed solution of butanone, ethanol, ammonium carboxylate, the mass concentration of the butanone is 8%, the mass concentration of the ethanol is 60%, and the carboxylate The mass concentration of acid ammonium salt is 6%, the volume ratio of described butanone solution, ethanol...

Embodiment 3

[0056] A method for preparing butanol by using rape stalks, comprising the following steps:

[0057] S1: Rinse the rape straw with 15% salt water for 2 hours, and after rinsing, dry the rape straw at a temperature of 93-104°C until the water content is ≤12%, to obtain dried rape straw;

[0058] S2: crushing the dried rape straw prepared in step S1, passing through a 200-mesh sieve to obtain rape straw particles;

[0059] S3: Put the rape stalk particles prepared in step S2 into a microwave reactor, add solution A and mix evenly, heat to 65°C, pretreat at a stirring speed of 300r / min for 0.8h, then cool to room temperature and filter to prepare Obtain pretreated rapeseed stalk particles; the solution A is a mixed solution of butanone, ethanol, ammonium carboxylate, the mass concentration of the butanone is 10%, the mass concentration of the ethanol is 80%, and the carboxylate The mass concentration of acid ammonium salt is 8%, the volume ratio of described butanone solution, e...

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Abstract

The invention discloses a method for preparing butanol from rape stalks, and belongs to the technical field of biomass energy. The butanol is prepared by conducting such steps as drying, crushing, pre-processing, hydrolyzing and fermenting the rape stalks and the like. With the application of the method provided by the invention, the uncertainty of a microbial enzyme fermentation sugar making process can be avoided, so that technical risks are reduced; the method provided by the invention, as a green and environment-friendly process, is high in sugar conversion rate and low in the amount of generated residues; the method provided by the invention is relatively low in hydrolysis temperature, low in energy consumption and is conducive to the popularization and application of related technologies. The bio-fuel, namely the butanol prepared by virtue of the method provided by the invention, in comparison with fuel prepared by virtue of a petroleum refining method, is more significant in environmental protection effect, and the emission of greenhouse gas can be effectively reduced. Meanwhile, a novel solution is provided for solving the problem of energy shortage.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of biomass energy, and in particular relates to a method for preparing butanol by using rape stalks. [0003] 【Background technique】 [0004] Due to the popularization of coal, electricity and natural gas and the abundance of various industrial products in China in the past two decades, the demand for rape straw in rural areas has decreased, and the disposal of a large amount of rape straw has become a serious social problem. Farmers in many places are still directly in the field Burning rape stalks will cause air pollution, fires, and the failure of planes to take off and land normally. [0005] With the growth of population, food, energy and environment are the most important challenges facing human beings. The production of renewable clean energy from cellulosic raw materials has attracted increasing attention, and the production of fuel butanol from crop wastes is considered to be the most promi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/16C12R1/145
CPCC12P7/16Y02E50/10
Inventor 覃央央
Owner 广西南宁荣威德新能源科技有限公司
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